:root { color-scheme: light dark; }

body {
  font: 16px/1.5 system-ui, sans-serif;
  margin: 0;
  background: #f7f7f5;
  color: #1c1c1e;
}

@media (prefers-color-scheme: dark) {
  body { background: #1c1c1e; color: #f0f0f0; }
  nav { background: #2a2a2c; border-bottom-color: #3a3a3c; }
  nav a { color: #f0f0f0; }
  nav a:hover { background: #3a3a3c; }
}

nav {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: #fff;
  border-bottom: 1px solid #e3e3e1;
}

nav a {
  text-decoration: none;
  color: inherit;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
}

nav a:hover { background: #ececea; }

main {
  max-width: 640px;
  margin: 2rem auto;
  padding: 0 1.25rem;
}

h1 { margin-top: 0; }

code {
  background: rgba(127, 127, 127, 0.18);
  padding: 1px 6px;
  border-radius: 4px;
}